720729599 has 2 divisors, whose sum is σ = 720729600. Its totient is φ = 720729598.

The previous prime is 720729589. The next prime is 720729601. The reversal of 720729599 is 995927027.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 720729599 - 2⁸ = 720729343 is a prime.

Together with 720729601, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720729589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360364799 + 360364800.

It is an arithmetic number, because the mean of its divisors is an integer number (360364800).

Almost surely, 2^720729599 is an apocalyptic number.

720729599 is a deficient number, since it is larger than the sum of its proper divisors (1).

720729599 is an equidigital number, since it uses as much as digits as its factorization.

720729599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 714420, while the sum is 50.

The square root of 720729599 is about 26846.4075622792. The cubic root of 720729599 is about 896.5835904815.

The spelling of 720729599 in words is "seven hundred twenty million, seven hundred twenty-nine thousand, five hundred ninety-nine".